Sorry for OT, but just for awareness (if you wish to use Amex but would like to avoid triggering BA Amex 241 voucher).

I just received post with Virgin with offer for Amex card, including benefits:
- 1 miles for £1 spend;
- 2 miles for £1 spend on Virgin;
- 3000 miles subscription bonus;
- Complimentary companion reward ticket (£15k/year spend required)
- Upgrade to Prem Economy for each £10k spend a year (2 vouchers per year are allowed, with £20k spend)

I am not sure this offer will pull me stronger to use Virgin but it could be useful for some people.